Door operating device



sePt- 13, 1932- V.1. L. cHRls-roPHER 1,877,386

DOOR OPERATING DEVICE Filed Aug. 5, 1951 2% pff W 4.5: f P// Z/ www l f6* I2/Q.: I l/0- u\\\\\\\\\\\\\\\\\\\\\\\\\V K mnmmmm"mm" 31a/vanto@ Patented Sept. 13, 1932 UNITED STATES :VroHN L. CHRISTOPHER, or EUGLID, oIIIo noon OPERATING DEVICE Application filed August 5, 1931. Serial No. 555,321.

few parts which are well adapted for production at a low cost.

Further and more limited objects of the invention will appear as the description pro-v ceeds and by reference to the accompanying drawing in which Fig. 1 is a sectional plan view of my improved door opening and checking device applied to a door; Fig. 2 is a sectional view on the line 2 2 of Fig. 1.

Referring now to the drawing the reference character 1 designates a door which is mounted on a door jamb 2 by means of a plurality of hinges, one of which is indicated by the reference numeral 3. Secured to the door jamb 2 is a casting 4 having angularly disposed portions 5 and 6 which are secured to the door by means of screws 7` and 8. The casting 4 is provided with an outwardly projecting portion 9 the end of which is bifurcated and provided with oppositely disposed openings in which are journaled the trunnions 11 and 12 of a. nut 10.

Secured to the door 1 is a bracket 13 which is secured in place by means of bolts 14 and 15. The bracket is provided with a projecting portion 16 which is bifurcated and provided with a plurality of oppositely disposedv openings in which are journaled the trunnions 18 and 19 of 'a nut 17. Extending through the nuts 10 and 17 is a shaft 20 the opposite ends of which are threaded right and left hand respectively. Carried by one end of the shaft 20 is a crank 21 which is non-rotatably secured to the -shaft andpro-V vided with a handle 22 by means of which the shaft is turned. As the opposite ends of the shaft are threaded in opposite directions, it will be obvious that as the shaft is'turned in one direction the nuts will be moved apart and when turned in the oppositefdirection the nuts will be moved toward each other. It Y will thus be seen that by turning the shaft in one direction or the other, the door may be moved in the direction desired.y The pitch of the threads on the shaft is such that the Vdoor will remain in any position.

It will now be clear that I have provided a door opening and checking device which will accomplish the objects of the invention as hereinbefore stated. Various changes may be made in the details of construction as well as in the size and shape of the various parts without departing from the spirit of my in; vention. It is therefore to be understood that the embodiment of the invention herein disclosed is merely illustrative and is not to be considered in 'a limiting sense as the invention is limited only in accordance with the scope of the appended claims.

Having thus described my invention, what I claim is 1. A. door opening an-d closing device comprising a bracket secured to the door` jamb, a second bracket secured to the door, a nutA carried by each of said brackets, a shaft extending through said nuts, the opposite end portions of said shaft having right and left hand threads respectively anda crank for turning said shaft. j

2. A door opening and closing device comprising a pair kof brackets carried by the `door and door jamb respectively, a nut journaled in each of said brackets, a shaft extending through said nuts, one end of said shaft having a right hand thread and the opposite end of said shaft having a left hand thread and a crank for turning said shaft.

- 3. A door opening and closingdevice, comprising a pair of brackets carried by the door and door jamb respectively, each of said brackets having a bifurcated end in which is j ournaled a nut, a shaft extending through 'j said nuts one end of the shaft having a right hand thread and 'the opposite end of said shaft having a left hand thread and a crank for turning said shaft. j

Intestimony whereof, I hereunto aflix my signature. l

JOHN L. CHRISTOPHER. s 

